Yes. Quiche must be refrigerated. I know, I know. It’s a pie, not a living thing. But it’s also a custard—eggs and dairy in a buttery shell. That’s a bacteria party waiting to happen.
You wouldn’t leave a glass of milk out all day, would you? Quiche is essentially baked milk with a crust. Treat it with the same respect, or you’ll regret it by breakfast.
But what about the “two-hour rule”?
Food safety nerds (bless them) say perishable foods can sit out for two hours. After that, you’re playing a dangerous game. The clock starts the second it comes out of the oven, not when you take your first bite.
If your kitchen is a toasty 90°F (like a summer BBQ), that window shrinks to one hour. Don’t test it. Your stomach will not forgive those warm, silky leftovers.
